Xj>xs

[Nubian]

Will a XJ11 exhaust fit my '81 XS standard which use a Special exhaust?

[crazy steve]

Yes........

[Jerry]

Well, yes and no. The XJ exhaust is a little wider than the Standards or Specials, I believe, as the XJ's right engine case is wider due to the use of a brush-type alternator. Not a problem unless you have other accessories, such as case guards. When I put Standard case guards (3-point) on my XJ I had to notch the guards for exhaust system clearance. This may have been because of the brand of guards I used, though.

The XJ's muffler tab, if you plan to use the XJ mufflers, is in a different position than on either a Standard or Special. In addition, the XJ mufflers have a slight upward angle. Again, a short piece of flat stock to go between the mufler mounting tab and the footpeg mount is all that is needed to make up the difference. I found this out when I put a Jardine exhaust system on my XJ; the differences are not great but are there.

In essence, the XJ system is shorter than the Standard systems, is slightly wider, and the muffler mounting tab is in a different location. Oh, and the XJ has a cross-over balance tube between the two sides. This was suposed to provide better low-end torque. I have not compared the XJ system directly with a Special system, but do know that the rear footpeg mounts are not the same, so I suspect the exhaust systems have differences as well.

[cywelchjr]

In essence, the XJ system is shorter than the Standard systems, is slightly wider, and the muffler mounting tab is in a different location. Oh, and the XJ has a cross-over balance tube between the two sides. This was suposed to provide better low-end torque. I have not compared the XJ system directly with a Special system, but do know that the rear footpeg mounts are not the same, so I suspect the exhaust systems have differences as well.

Standards have a crossover between the two sides, and at least MY Jardine has a crossover between the two sides as well, which may be why I don't notice any apparent loss of low end like some do with aftermarket systems, and why mine has such good low end torque.

[crazy steve]

...I have not compared the XJ system directly with a Special system, but do know that the rear footpeg mounts are not the same, so I suspect the exhaust systems have differences as well.

Jerry, the Specials/'81 standard and the XJ share all the same parts in relationship to the exhaust systems; the muffler/rear footpeg mounts are the same, as is the centerstand (which are different from the '78-80 standards) so all attaching points/clearance requirements are identical for a Special/XJ exhaust swap...

[Jerry]

Jerry, the Specials/'81 standard and the XJ share all the same parts in relationship to the exhaust systems; the muffler/rear footpeg mounts are the same, as is the centerstand (which are different from the '78-80 standards) so all attaching points/clearance requirements are identical for a Special/XJ exhaust swap...
02-02-2012 11:49 AM

Thats good to know. Thanks for the info.